Securing or clamping means for lock cylinders



Sept. 11, 1928. Y J. 5. LACH SECURING OR CLAMPING MEANS FOR LOCK GYEINDERS Filed Nov. 14, 1925 all/III! i4 W 9.9mm

Will/11111711151.

gvwentpr jffuj/ Patented Sept. 11, 1 928;

* UNITED STATES rarsnr orrrce.

JOSEPH S. LACK, OF STAMFORD, CONNECTICUT, ASSIGNOR TO THE YALE & TOWNE MANUFACTURING COMPANY,

or STAMFORD, CONNECTICUT.

SECURING 0R GLAMPING MEANS FOR LOCK CYLINDERS.

Application filed November This invention relates to improvements in securing or clamping means for lock cylinders used with mortise locks,one object of the invention being to provide simple and efficient clamping means which shall be so constructed that the same will automatically adapt itself to irregularities of two cylin-' ders, as when the groove or scoring for the securing device is deeper in one cylinder than in the other.

With this and other objects in view, the invention consists in certain novel features of construction and combinations of parts as hereinafter set forth and pointed out in the claim.

In the accompanying drawings,

Figure 1 is a View partly broken away'and partly in section showing an. embodiment of my invention. I

Figure 2 is a sectional view taken at right angles to Figure 1 and including a port-ion of a door, and p Figure 3 is a separate View of the cylinder securing or clamping device.

A portion of a door is represented at 1. and provided with a mortise to receive a lock casing 52. Thedoor and also the lock casing are provided with openings for the accommodation of two cylinder locks reprcsented at 3-l. The cooperation of theplug members with the bolt mechanism within the casing Q'may be of any approved construction and need not, so far as my present improvements are concerned, be further described. The lock cylinders 3 and 4 are provided with grooves or scoring 5 for the reception of securing or clamping means to prevent the cylinders from turning. It sometimes happens that the grooves or scoring in one cylinder may be deeper than the grooves or scoring in the other cylinder, or the grooves or scoring in the same cylinder may vary in depth and the securing devices heretofore employed will not properly adapt themselves to such irregularities. 7

My improved securing or clamping means comprises a yoke or carrier 6, between the free ends of the parallel members of which, a dog 7 is pivotally supported intermediate 14, 1925. Serial No. 69,034.

of its ends and provided with fingers 8-8 to engage in grooves 5 of the respective cylinders 3 and 4-. A threaded shaft 9 is swiveled as at 10 within the locking casing 2 and is provided at one end witha threaded shank 11 which passes through a hole in one end of a yoke or carrier 6 and has threaded engagement with the wall of said hole. The other 7 end of the shaft 9 is provided with a slot 12 for the aecommodation of a screwdriver, access tor the latter to the slotted end of the shatt 9 be ng airorded by an opening 13 in a plate 14 countersunk in the edge portion Oil" the door, .said plate 141- being a part of the lock casing 2. T Y

' lily turning the shaft 9 in one direction, the yoke or carrier will. be moved forwardly to (it so desired) engage the fingers ot the dog 7 in the grooves 5 of the respective cylinders and as said dog is pivotally connected with the carrier, it will automatically adapt itself to the depths of the grooves in the respective cylinders" even though the groove in one cylinder may be deeper than the, groove in the other cylinder, as illustrated in Figure 2. The

dog 7 may also be provided with fingers 1. 5 15 pro ecting 1n the opposite direction to very cheaply made'without any loss ol elitciency and may be mounted in a narrower case than was permissible with previous devices. The case provided with longitudinal slots to accomn'iodate the pivotal movement ot the dog as the latter adjusts itselt to the differences between the grooves or recesses in the two egdinders, and the lingers 15, besides engaging the case to limit the pivotal move mentof the dog, engage between the top and bottom of the yoke in such manner as to prevent rocking of the dog along its pivot, without requiring great width in theyoke for the support of the dog.

Heving fully described my invention what claim as new and desire to seeiire by Letters-Patent, is

Means forsecurlng lock cylinders comptis ngei's fn'qectin'g from the outer end of the dog between the top and bottom of the yoke and arranged to extend through the open sides of the yoke as the dog moves pivotally, and means for securihg and adjusting the l yoke.

In testimony whereef I ha ye sig ed this 

